Internal-combustion engine.



F. H. FARMER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILEN NOV. 9. I916. 1,230,470. Patented June 19, 1917.

im M222! UNITED s'rarns @FFKQ FRANK H. FARMEB, 0F CLEVELAND, OHIO, ASSIGNOR TO THE WHITE MOTOR COMPANY, OF CLEVELAND, OHIO. A CORPORATION OIE OHIO.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented June 19, 1917.

Application filed November 9, 1916. Serial No. 130,317.

case into which the excess oil from said hearings will drip; and to provide an oil passage through which 011 from the crank case may flow back into the oil reservoirf It is likewise common practice to employ in connection with this oil circulating system an oil strainer through which the oil must pass after it has dripped from the bearings and before it is again drawn into the pump.

It is of common occurrence, in c0nstructions of this sort, for the strainers to become so clogged up by the dirt in the oil, that they will no longer permit the oil to flow through. The result will be that the pump will cease to supply the bearings with oil either because the oil can not return to the oil reservoir} or can not flow from the oil reservoir to the pump.

\Vhen this happens the operator of the engine. or generally the driver of the auto mobile. of which the engine is a part, will not know of this condition until his attention is called to it by some obvious injury to the bearings which have been so deprived of necessary luln'ication.

The object of this invention is to provide a strainer which will operate as such so long as it does not become clogged up...but which after it has become clogged up will not interfere with the flow of the unstrained oil.

The invention consists in the construction and combination of parts shown inthe drawing and hereinafter described, and pointed out definitely in the appended claims.

in the drawing. Figure 1 is a longitudinal vertical section of the lower part of the crank case of an internal combustion en- ;zine: Fig. 2 is a transverse vertical section oi the lower part pi' said crank case in the' plane; indicated by i on Fig. 1.

Referring to the parts by reference characters, 1 represents the lower part of the crank case of a four-cylinder internal combustion engine. \Vithin this crank case is an approximately horizontal partition 15, which at its edges rests upon and is secured to the flanges 13 which project inward from the side and end walls of said crank case.

This partition while approximately horizontal, is nevertheless dish-shaped, and, at its lowest point. there is a hole 16 surrounded by a downturned flange 17. It will be understood by those familiar with this art that oil from the cylinders and from various hearings will drip into the-crank case onto this partition, and will flow down through the hole 16 into the oil receptacle 20 between this partition and the bottom of the crank case; and it will be likewise understood that it is from this oil receptacle 20 that the oil is withdrawn through such a pipe as 18 by a pump or other suitable n1ea11s,3vl1ich are not shown, and discharged through such afpipe as 19, to the bearings of the crank shaft. and connecting rods, which in turn drips as stated into'the crank case upon the partition 15.

An upright tubular strainer 25, made of wire mesh or some equivalent material, rests upon the lmttom-ot'the crank case, and e.\" tends upward around the flange 17, but not into contact therewitn 01 With the partition 15. It is evident therefore that the oil. which flows through the hole 16 will flow into this strainer tube, and that it will flow through the mesh of this strainer into the oil reservoir .2 0, and that the strainer will prevent the passage of much of the dirt with wliich the oil has become contaminated by use.

It is to be noted, therefore, that. in the construction shown in the drawing", this strainer tube wlnle it makes a tight oint at its bottom ivith the bottom of the crank case does not contact at itsuppcr edge with anything. This upper edge is. however," above the normal and expected level of the oil in the crank case, wherefore so long as said strainer does not become clogged the oil Will. of course, pass through it. It, however, the strainer does get so clogged with dirt that the oil can not pass through it as fast as it is delivered to it. the oil will accumulate within this strainer tube. and will eventually flow overthe top thereof into the oil reservoir. Of course, the oil which does so flow will not be strained oil,

\YhPJG'iOI'i it ie not desirable that norinaliy, ihe oil shah flow over the top thereof. But oil which is not strained is much better than. no oil ai all, and iherefore the construction. insures i there shall always he an a leqnate supply of oil in the oil reservoir to serve the purposes for which said, oil is prw \iileiih and it insures also that This oii shall he strained so iong as the strainer remains operati re.

While the statement has heen made that the lower end oi the strainer tuhe rests npon and forms a lightjoint with the bottom of the c'anh case it should he noted that the part oi? the hocroni with which the s rainer does so engage is a renio "able 30 which is Secured over a hole in the bottom of the crank case hy means of holts. There is a recess 31 in the inner face of this cz'p into which the lower end of the strainer fits. I it is therefore an easy matter to periodically take off this cap, and to, at the some time remove the strainer for the purpose of cleaning it. it is easy then to replace it in opcra ilVP position hy merely replacing the mg 3 iaving described my invention, 1 cl; iin:

l. in an internal. conihnsiion engine, iho conihinaiion of a crank case inlo which the oil will drop from the l) airings of the crank shaifl a nil connecting rods, which 0 'ank case has an oil discharrc opening. an oil recepl'acle into which said oil opening discharges oil and from which oil may he withd awn h; a pump and delivered. to the hairings of the crank shaft and connecting roos, and an nprighl strainer tnhe which has a closed lower end and an open upper end and. which is located in such posiiion that the oil in following the above Clescrihed path is at some iinie (lelivered into the open end of said :5 minor and may flow from said strainer .;her through Hie ineshes thereof or over the liop l reo'f into the adjacent par oi the oil circi rating path.

In an internal conihnsi'ion engine the shaft and nine Ling roil -which cran case has an oil discharge opening, an o;

and. l

receptacle,

ilOWGl' end i te l. ii r ,ive into discharged from i l discharge opengs i ernal combustion eng an upright strain per e reecpracle n A npper end inc oi through i 3, In an i will drip from. the hear-in of the crank shaft and. connoc'i'ing ro(l ,-which crank case has an oil discharge opening, an oil c ptaclc in iho hottom of crank case having an opening il'ironn'h its bottom rlirecaly below the oii aim? opening of the crank case cap reinorehi r secured over the opening in the hote oni of the oil cepfacle which can has a re in its ipper surface. and a strainer tnhe whose lower end. is fitted into said recess and whose n end, is below ihe oil discharge opening :he cronl-z case.

i. in an iniernai cranl having inwarilly directed along its end a (l side walis, which resi's npon and is ,ecnred flanges which separates crank iiicl' combustion on proper from an oil reservoir Vow S;illi(*;-'zi1(l partiiion having a re l k l annular flange but out of contact with it and with said partition.

In testimony where i in signature in the nesaes.

heren -a aliir; sence of Lo l'he bottom of i;l e 

